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-rw-r--r--libjava/sysdep/ia64/locks.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/libjava/sysdep/ia64/locks.h b/libjava/sysdep/ia64/locks.h
new file mode 100644
index 000000000..1a861b2e3
--- /dev/null
+++ b/libjava/sysdep/ia64/locks.h
@@ -0,0 +1,61 @@
+// locks.h - Thread synchronization primitives. IA64 implementation.
+
+/* Copyright (C) 2002 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+#ifndef __SYSDEP_LOCKS_H__
+#define __SYSDEP_LOCKS_H__
+
+#include <ia64intrin.h>
+
+typedef size_t obj_addr_t; /* Integer type big enough for object */
+ /* address. */
+
+inline static bool
+compare_and_swap(volatile obj_addr_t *addr,
+ obj_addr_t old,
+ obj_addr_t new_val)
+{
+ return __sync_bool_compare_and_swap (addr, old, new_val);
+}
+
+// The fact that *addr is volatile should cause the compiler to
+// automatically generate an st8.rel.
+inline static void
+release_set(volatile obj_addr_t *addr, obj_addr_t new_val)
+{
+ __asm__ __volatile__("" : : : "memory");
+ *(addr) = new_val;
+}
+
+inline static bool
+compare_and_swap_release(volatile obj_addr_t *addr,
+ obj_addr_t old,
+ obj_addr_t new_val)
+{
+ register unsigned long ar_ccv __asm__("ar.ccv") = old;
+ unsigned long out;
+ __asm__ __volatile__("cmpxchg8.rel %0=%1,%2,%4"
+ : "=r"(out), "=m"(*addr)
+ : "r"(new_val), "m"(*addr), "d"(ar_ccv) : "memory");
+ return (out == old);
+}
+
+inline static void
+read_barrier()
+{
+ __sync_synchronize ();
+}
+
+inline static void
+write_barrier()
+{
+ __sync_synchronize ();
+}
+
+#endif